QuizFormulas08

QuizFormulas08 - 1- x 2 )-( 1- 2 ) q 2 1 n 1 + 2 2 n 2 t =...

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STAT 212: Quiz 8 Formulas ¯ x = 1 n n X i =1 x i s 2 = 1 n - 1 n X i =1 ( x i - ¯ x ) 2 = 1 n - 1 ( n X i =1 x 2 i - ( n i =1 x i ) 2 n ) s = s 2 r = 1 n - 1 n X i =1 ± x i - ¯ x s x ²± y i - ¯ y s y ² ˆ y = b 0 + b 1 x ; b 1 = r s y s x , b 0 = ¯ y - b 1 ¯ x μ X = X x i p i σ 2 X = X ( x i - μ X ) 2 p i σ 2 a + bX = b 2 σ 2 X σ 2 X + Y = σ 2 X + σ 2 Y + 2 ρσ X σ Y σ 2 X - Y = σ 2 X + σ 2 Y - 2 ρσ X σ Y μ ¯ x = μ ; σ ¯ x = σ n P ( X = k ) = n ! k !( n - k )! p k (1 - p ) n - k ; μ = np, σ = p np (1 - p ) P ( X = k ) = e - μ μ k k ! ¯ x ± z * σ n n = ± z * σ m ² 2 z = ¯ x - μ ( σ/ n ) t = ¯ x - μ ( s/ n ) ¯ x ± t * s n z = x
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Unformatted text preview: 1- x 2 )-( 1- 2 ) q 2 1 n 1 + 2 2 n 2 t = ( x 1- x 2 )-( 1- 2 ) q s 2 1 n 1 + s 2 2 n 2 ( x 1- x 2 ) t * s s 2 1 n 1 + s 2 2 n 2...
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